: In off-list email, Kelly has said he thinks is noise is from a grow
: operation, so I think he has to DF it on the HF band(s) where he hears
Perhaps that's where he noticed it. I hear 60 Hz powr line arcing harmonics
to 2.3 GHz at one messy location and no doubt goes higher in some cases.
Since he can't easily DF at HF, listen higher, where it's easier to DF. VHF
is a good start. 324 MHz is my default frequency since that's around where
power companies look and my frequencies match their frequencies. When he
nails it down with easy to carry, use and locate UHF equipment and cures it,
it'll be gone at HF too.
HF loops are great at HF, can be bought for $$$ or made for $$ - $$$, which
is fine. However, most people have an HT, whether it's a $35 Chinese
special or up to $300 Ham job. All that may be needed is a directional
antenna. VHF, UHF antennas are as low as a few cents on ebay, for those
who can't make them, beams as low as a few bucks. Some like to build, some
like to plug, play and get the job done. A vertical can be used to locate
by proximity, a beam for direction.
I'd recommend studying what one has and how it can be used, then go from
there, it may be more than adequate.
: Another important suggestion -- a spectrum display is usually the best
: way to nail down whether it's impulse noise or electronic noise, but I
: don't think Kelly has one.
Well, although interesting to see what it looks like, he is hearing it, not
seeing it. When he hears it loudest and nails down the source, it's going
to be aurally, not visually. I'm sure in most every case nobody cares what
it looks like, just whether they hear it or not. The source and how it
produces the noise isn't as important as making it go away.
Kurt
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